NHDL, a recombinant VL/VH hybrid antibody control for IgG2/4 antibodies

MAbs. 2020 Jan-Dec;12(1):1686319. doi: 10.1080/19420862.2019.1686319.

Abstract

The mechanism of action of recombinant IgG2/4 antibodies involves blocking of their target without the induction of effector functions. Examples are eculizumab (Soliris®), which is used clinically to block complement factor C5, as well as anti-human CD14 (r18D11) and anti-porcine CD14 (rMIL2) produced in our laboratory. So far, no proper IgG2/4 control antibody has been available for controlled validation of IgG2/4 antibody functions. Here, we describe the design of a recombinant control antibody (NHDL), which was generated by combining the variable light (VL) and heavy (VH) chains from two unrelated specificities. NHDL was readily expressed and purified as a stable IgG2/4 antibody, and showed no detectable specificity toward any putative antigen present in human or porcine blood. The approach of artificial VL/VH combination may be adopted for the design of other recombinant control antibodies.

Keywords: IgG2/4; Recombinant antibody; control antibody; hybrid; therapeutic antibody.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibodies, Monoclonal / genetics*
  • Antibodies, Monoclonal / metabolism
  • Biological Therapy
  • Blood Proteins / metabolism
  • Epitopes / metabolism
  • Humans
  • Immunoglobulin G / genetics*
  • Immunoglobulin Heavy Chains / genetics*
  • Immunoglobulin Light Chains / genetics*
  • Lipopolysaccharide Receptors / immunology
  • Lipopolysaccharide Receptors / metabolism
  • Mice
  • Placebos
  • Protein Engineering
  • Recombinant Fusion Proteins / genetics*
  • Swine

Substances

  • Antibodies, Monoclonal
  • Blood Proteins
  • Epitopes
  • Immunoglobulin G
  • Immunoglobulin Heavy Chains
  • Immunoglobulin Light Chains
  • Lipopolysaccharide Receptors
  • Placebos
  • Recombinant Fusion Proteins

Grants and funding

TThis work was supported by Helse Sør-Øst RHF [2018052]; [Norges Forskningsråd [287927]; Norges Forskningsråd [179573]; Norwegian council of cardiovascular disease [NCCD-2014]; Helse Nord RHF [8416/SFP1083-13]; Odd Fellow Foundation [OFF-2015].